These chambers from AEGIS Tools are a vital part of your windshield repair kit. This Small Fixture Chamber (3/16") screws into the repair fixture and against the windshield to seal against the impact point. This chamber works exclusively with our Quik Kit fixture (FIX2001), but is interchangeable with our Pro-Series. Just be certain that you still have the plastic housing so the chamber is able to attach to the footing of the Pro-series.